DSPIC33EP128MU204-E/ML - 16-bit DSC 128KB Flash USB | Microchip
MPN: DSPIC33EP128MU204-E/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.2 | $6.20 |
| 10 | $5.75 | $57.50 |
| 100 | $5.3 | $530.00 |
| 500 | $4.95 | $2,475.00 |
| 1,000 | $4.6 | $4,600.00 |
DSPIC33EP128MU204-E/ML Overview
A digital signal controller combines the computational strengths of a microcontroller with the DSP-engine features of a digital signal processor in a single silicon device. Within the power-management hierarchy of embedded systems, a DSC sits above general-purpose MCUs for control-loop tasks and below multi-core application processors, making it the natural choice for digitally controlled power conversion and precision motion systems.
Key features include 60 MIPS core performance (per DigiKey product data), 1 KB of data Flash (EEPROM emulation), three on-chip operational amplifiers, motor-control PWM with dead-time insertion, quadrature encoder interface (QEI), a peripheral trigger generator (PTG), and a charge time measurement unit (CTMU) for capacitive touch and precision time measurements.
Technically, the dsPIC33EP core executes DSP multiply-accumulate instructions and supports dual operand fetch, enabling single-cycle MAC operations used in filters and transforms. The MU variant distinguishes itself from the MC variant through the integrated full-speed USB 2.0 device/peripheral module, eliminating an external USB interface chip in connectivity-centric designs.
Typical applications include digital power supplies and USB-connected power converters, brushless DC and PMSM motor control with encoder feedback, and industrial instrumentation with USB data upload.
Design consideration: verify the 3.0-3.6 V supply domain and USB VBUS handling early; the E-suffix temperature rating supports extended industrial environments but thermal pad soldering on the QFN is mandatory for heat spreading.
This page synthesizes distributor inventory data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP128MU204-E/ML — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with DSPIC33EP128MU204-E/ML (same form factor and footprint) — differing in Operating Temperature, Package, Communication Interfaces, Core Type, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MU204-I/ML
✅ Drop-In✓ In Stock
$4.2 / Unit
View Datasheet →DSPIC33EP128MU204-H/ML
✅ Drop-In✓ In Stock
$4.15 / Unit
View Datasheet →DSPIC33EP128MC204-E/ML
✅ Drop-In✓ In Stock
$4.6 / Unit
View Datasheet →DSPIC33EP256MU204-E/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64MU204-E/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MU204-E/ML Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC core |
| Core Performance | 60 MIPS |
| Program Memory (Flash) | 128 KB (43K x 24) |
| RAM | 16 KB |
| Data Flash (EEPROM) | 1 KB |
| ADC Resolution | 12-bit |
| USB | Full-Speed USB 2.0 device/peripheral |
| Op-Amps (On-chip) | 3 |
| PWM | Motor Control PWM (MC PWM) with dead-time |
| Communication Interfaces | UART, SPI, I2C, USB |
| Additional Peripherals | QEI, PTG, CTMU |
| Operating Temperature | -40C to +125C (E suffix) |
| Package | QFN-44 (8x8x0.9 mm) |
| Mounting Type | Surface Mount |
DSPIC33EP128MU204-E/ML qfn-44 (8x8x0.9 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP128MU204-E/ML (qfn-44 (8x8x0.9 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for DSPIC33EP128MU204-E/ML.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128MU204-E/ML is suitable for 6 applications: Digitally Controlled Power Supplies, BLDC/PMSM Motor Control, USB-Connected Industrial Instrumentation, Automotive and Industrial Sensing Nodes, Capacitive Touch User Interfaces, Audio and Signal Processing Embedded Systems.
Digitally Controlled Power Supplies
The DSPIC33EP128MU204-E/ML fits digitally controlled AC-DC and DC-DC power conversion because its 60 MIPS dsPIC33E core with single-cycle DSP MAC instructions executes compensation loops at switching frequencies in the hundreds of kHz, while the motor-control PWM block generates complementary outputs with programmable dead-time. The 12-bit ADC with simultaneous sampling captures output voltage and inductor current for voltage-mode or current-mode control. USB connectivity enables in-field firmware updates and telemetry reporting to a host PC without an external interface chip. Because it is a single-chip solution, designers replace discrete analog compensators with firmware, improving flexibility and bill-of-materials cost.
Recommended
BLDC/PMSM Motor Control
For brushless DC and permanent-magnet synchronous motor drives, the DSPIC33EP128MU204-E/ML provides MC PWM with complementary outputs and dead-time insertion driving a three-phase inverter, a quadrature encoder interface for rotor position, and three on-chip op-amps that condition shunt-resistor current signals into the 12-bit ADC. Running field-oriented control at 60 MIPS leaves headroom for speed PI loops and communication. The QFN-44 8x8 mm package fits compact inverter boards, and the -40C to +125C E-grade supports motor-adjacent environments. USB allows drive tuning and datalogging from a host during commissioning.
Recommended
USB-Connected Industrial Instrumentation
Data loggers and bench instruments benefit from the DSPIC33EP128MU204-E/ML because the integrated full-speed USB 2.0 device module streams measurement data to a PC without a separate USB-UART bridge, reducing BOM cost and PCB area. The 12-bit ADC digitizes sensor inputs, the CTMU supports capacitive touch front panels and precise time-interval measurements, and the 1 KB data Flash stores calibration constants across power cycles. The PTG offloads autonomous peripheral sequencing from the CPU, sustaining sampling throughput while the main firmware handles USB protocol stacks and data formatting.
Recommended
Automotive and Industrial Sensing Nodes
With the extended -40C to +125C operating range of the E suffix, the DSPIC33EP128MU204-E/ML mounts in engine bays, industrial cabinets, and other thermally aggressive locations where the I-grade (-85C) variant is marginal. The 12-bit ADC and CTMU acquire analog and capacitive-touch signals, the 128 KB Flash holds protocol stacks plus application firmware, and UART, SPI and I2C interfaces link to CAN transceivers, sensors, and external memory. Three on-chip op-amps amplify low-level sensor outputs, and the DSP core applies digital filtering before results are transmitted upstream.
Recommended
Capacitive Touch User Interfaces
The charge time measurement unit (CTMU) of the DSPIC33EP128MU204-E/ML measures charge transfer on touch pads, enabling capacitive buttons and sliders with no dedicated touch controller. The 12-bit ADC supports analog slider sensing, the 1 KB data Flash retains calibration and user settings, and USB lets the panel firmware be updated or log events through a host. The three on-chip op-amps buffer analog reference signals for drift-free measurements. At 60 MIPS, the core runs touch acquisition, decoding, and host communication concurrently while maintaining the low power modes needed for always-on panels.
Recommended
Audio and Signal Processing Embedded Systems
The DSP engine of the DSPIC33EP128MU204-E/ML executes multiply-accumulate operations in a single cycle, suiting it to audio filtering, tone generation, and adaptive control in USB audio accessories and industrial sound processing. Full-speed USB 2.0 provides a device-class audio or bulk data link to hosts without external silicon, and the 16 KB RAM buffers multiple audio frames. UART and SPI interfaces connect to codecs and external Flash for sample storage. The 44-QFN 8x8 mm footprint keeps encoder and mixer boards compact, while the E-grade rating covers enclosed, warm environments.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MU204-E/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MU204-I/ML | DSPIC33EP128MC204-E/ML | DSPIC33EP256MU204-E/ML |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | QFN-44 (8x8 mm) | QFN-44 (8x8 mm) - same | QFN-44 (8x8 mm) - same | QFN-44 (8x8 mm) - same |
| Core Performance | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS |
| Flash Memory | 128 KB (43K x 24) | 128 KB | 128 KB | 256 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB |
| USB 2.0 Full-Speed | Yes | Yes | No | Yes |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +125C |
| 12-bit ADC / Op-amps | Yes / 3 | Yes / 3 | Yes / 3 | Yes / 3 |
Key Differentiators
- Integrated full-speed USB 2.0 device module (vs DSPIC33EP128MC204-E/ML)
- Extended -40C to +125C temperature rating at same footprint (vs DSPIC33EP128MU204-I/ML)
- Three on-chip op-amps plus CTMU (vs DSPIC33EP256MU204-E/ML)
Design Notes
dsPIC33EP devices operate from a 3.0-3.6 V single supply (verify exact range in the official datasheet). For the MU variant, the USB transceiver requires the separate VUSB3V3 pin tied to a clean 3.3 V rail via a ferrite bead - do not leave it floating when USB is used. Estimated: at 60 MIPS with USB active, typical core current is in the tens of mA range, so a 500 mA LDO comfortably powers the MCU plus small peripherals; size the regulator from actual datasheet IDD curves for your clock configuration.
The 44-QFN (8x8x0.9 mm) package has an exposed thermal pad that must be soldered to a grounded copper pour - it is both the primary heat-removal path and the ground return. Place 0.1 uF decoupling capacitors at each VDD pin within 2 mm of the pad, plus one bulk 10 uF. Keep the USB D+/D- pair as a 90-ohm differential pair routed away from PWM traces; stubs longer than a few mm degrade USB eye compliance.
Three recurring issues: (1) substituting an -I/ML (-85C) part for the -E/ML in hot enclosures causes field failures - always match the temperature suffix; (2) MC and MU variants are pin-compatible but the USB pins are repurposed on the MC - firmware must be requalified after any MU-to-MC swap; (3) the 1 KB data Flash has limited erase cycles - wear-level calibration storage and avoid writing it in every control-loop iteration.
Compliance Information
Compliance data not present in retrieved web data. Verify RoHS/REACH status on the Microchip product page for this exact ordering code before procurement.
